Having previously bought all of Codemasters F1 games, I expected this to aimply carry on from where '13 left off - and I wasn't disappointed. Essentially, this is very similar to the 2013 game, wth this years' cars and different noise & feel - much the same as when people buy FIFA games, which are all identical apart from the players/teams etc, so I don't know why people are moaning about no radical changes...
New things to 2014 include having a Short (7 race) and medium (12 race) career season option to go with the full season of 19 races. Also in are the new circuits in Russia and Austria, but apart from that (and the addition of a test at the start to try and suit a difficulty to your ability, and the removal of the young driver sessions) the only changes are related to the cars.
The racing dynamics have changed to match the new engines, and you need to be much more precise with both the throttle and steering - the rear slides around much more and using the same settings as I did in 2013 I find myself having to be much more gradual when accelerating, especially in the wet, and i do like this new feel.
I also like that the LCD screens which some of the teams use this year have been added, with the display showing, amongst other things, the gear, track status and lap delta, much clearer than the alternative simple LED screens in the other cars. Also, the tyre wear is much better in this years game, in my opinion anyway.
Everything apart from the classic cars from 2013 is in, and overall I would say this is in no way a let down - what more can they add from one year to the next, the idea of the game is to be an update of the previous year, and I think Codemasters have done a decent job of representing the changes in the cars.